Selected adjustments / fixes to make old apps compatible with new-style ADC driver
Counting the number of tests correctly
One printf made the tests unreadable
Improved battery voltage init, removed bogus printf() from debugging
Merged with upstream
Cleaned up tests further, in anticipation of merges with other branches
Showing correct test count also in success case
Merge branch 'master' of github.com:PX4/Firmware into adc_integration
Printing error reason in warning
Merge pull request #148 from PX4/adc_integration

Selected adjustments / fixes to make old apps compatible with new-style ADC